HCID 21916128, compound → HCID 20780029, compound

Participants

Reaction Steps

Palladium on carbon (10%) (0.54 g) was added to a solution of (4-fluoro-2-nitro-phenyl)-(2,4,6-trimethyl-phenyl)-amine (5.32 g, 19.4 mmol) in ethyl acetate (40 mL) under nitrogen at room temperature in a 500 mL round-bottomed flask. The flask was evacuated under high vacuum (<2 mm Hg) and purged with hydrogen six times at room temperature, then it was attached to a balloon filled with hydrogen. After the reaction mixture was stirred at room temperature for 4.0 h under 1 atmosphere of hydrogen, the balloon was removed and a stream of nitrogen was bubbled through the reaction mixture for 10 min. The reaction mixture was filtered through a pad of celite and solvents were removed in vacuo to afford the title compound as a red solid (4.74 g, 100% yield). The purity of this compound was determined to be 98% by LC/MS. 1H NMR (CDCl3, 300 MHz) δ 6.93 (s, 2H), 6.52 (dd, J=9.8, 2.7 Hz, 1H), 6.32 (td, J=8.6, 2.7 HZ, 1H), 6.22 (dd, J=8.7, 5.7 Hz, 1H), 2.32 (s, 3H), 2.12 (s, 6H); 13C NMR (CDCl3, 75 MHz) δ 159.8, 156.7, 138.2 (d, J=10.5 Hz), 137.6, 133.5, 132.3, 129.5, 117.3 (d, J=9.5 Hz), 105.1 (d, J=22 Hz), 102.9 (d, J=25.5 Hz),20.8, 18.0; Mass spec.: 245.14 (MH+)

Provenance & Evidence